atresia

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atresia

[ə′trē·zhə]
(medicine)
Imperforation or closure of a natural orifice or passage of the body.
References in periodicals archive ?
In order to test this hypothesis, BC and CC thresholds were measured for outpatients in our hospital with fibrotic aural atresia that had already been diagnosed using computed tomography (CT) scans.
Six patients with acquired aural atresia participated in the study.
Figure 3 shows the audiograms for the ears with fibrotic aural atresia.
Computer-aided virtual surgery for congenital aural atresia.
9) The primary factors in deciding whether to operate on congenital or acquired aural atresias are the severity of the heating impairment and the risk of cholesteatoma.